Field file 22 · Museum · Idaho

Old Idaho Penitentiary

Boise, Idaho Treasure Valley Territorial prison

DocumentedTicketedFee or pass1 to 3 hoursChecked July 2026Incarceration history
Public site The pin sits on the public place itself.Coordinates 43.6030, -116.1610Region Treasure ValleyState Idaho

Record

Why it matters

A territorial-era prison complex of sandstone cell houses, walls, yards, and exhibits spanning more than a century of confinement.

Field note

The preserved architecture is blunt enough. Let the records and cells carry the story instead of chasing paranormal claims.

Evidence line

This file is marked Documented because the place and its history are supported by the linked authoritative source. Practical details were last checked in July 2026. Conditions change. Check the primary source before leaving home.

Access

How to approach it lawfully

Access warning

Historic stairs and confined spaces. Follow posted access limits.

Access status
Ticketed. Public access with paid admission or a required ticket. Recorded as: State historic site.
Reservation
No reservation requirement recorded. Confirm with the official source.
Seasonality
No seasonal limit recorded. Hours still change; check before traveling.

Practical details last checked July 2026. Conditions change. Check the primary source before leaving home.

Plan the stop

What to plan for

Time
1 to 3 hours
Cost
Admission applies (Fee or pass)
Terrain
Not recorded in this file. Check the official source.
Mobility
Historic stairs and confined spaces.
Parking
Not recorded in this file. Check the official source.
Weather
Not recorded in this file. Check the official source.

Directions to the public entrance Opens Google Maps with these coordinates. The provider sees them under its own privacy policy. Confirm the entrance against the official source first.

Record

Sources

Sources are summarized in the Atlas's own words and checked on the dates shown. See the methodology, or send a correction.

Road file

Carry it forward

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Book the tour, not the trouble.

No partner link on this file. Use the official source for tickets and tours. How partner links work.